what we offer
Features
We have a wealth of experience working as main building contractors on all kinds of projects, big and small, from home maintenance and improvements to extensions, refurbishments and new builds.
Grundfos NB,NK
Grundfos NB/NK
These pumps are non-self-priming, single-stage, centrifugal volute pumps with axial suction port, radial discharge port and horizontal shaft. Back pull-out design enables removal of the motor, coupling, bearing bracket and impeller without disturbing the pump housing or pipework. Dynamically balanced rotary assembly as per ISO 1940 – Gr 6.3, minimises vibration levels and improves seal and bearing life.
Application
• Water distribution
• Air conditioning
Benefits
- Non self priming, horizontal, multistage centrifugal pump
- Enclosure Class: IP 54
- Insulation Class: F
- Automatic start/stop up to 100 times/hour
- Quiet operation
- Paint application by electrophoresis gives the motor and pump C.I parts, excellent corrosion resistance
- Simple control and alteration between pumps, dry running protection, built in relay for ensuring constant and steady operation
Technical Specifications
- Flow, Q: max. 1300 m3/h
- Head, H: max. 160 (250) m
- Liquid temperature: -35°C to +140°C (220°C)
- Operating pressures: 16 (25) bar
- Discharge diameter: DN32 – DN250
what we offer
Features
We have a wealth of experience working as main building contractors on all kinds of projects, big and small, from home maintenance and improvements to extensions, refurbishments and new builds.
Dimensions according to EN 733 and ISO 2858 standards
Back pull-out design
CED coated cast iron parts
Motors are with IE3 efficiency as standard
EN 12756 shaft seal
Enclosed, balanced impeller
Technical Specifications
Max. flow rate, Q
Max. head, H
Liquid temp
Discharge diameter
Operating pressures
1300 m3/h
160 (250) m
-35°C to +140°C (220°C)
DN32 - DN250
16 (25) bar
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